Flushing-valve.



B. THOENS. FLUSHING VALVE.

APPLICATIN FILED JULY 7. 1915.

Patented May 14, 1918.

Z QU l J IEW/ j Q w/ rru Z W l @A r m o m 5 m w y Mmm/HS UNITED STATES' PATENT OFFICE.

BURCHARD THOENS, GF `NE.W'Y.ORK,N. Y.

RUSHING-VALVE.

Specification of Letters Patent.

Patented May 14;, 19118'.

Application filedlluly '7, 1915; SeraLfNo. 38,594'.

To all 'whom z'mag/ concern.:

Beit known that I, BURGHARD, THOENS, a subject of: the Emperor of Germanyresid ing in the city, county, and State of New York, hayefinvented.oertainnew and useiulv Improvements in. FlushingsValves, oi whichv the followingfis fa., specification.

My inyentionrelates `toflushing'apparatus used in connection with toilets and' has particular reference to ay valve which may be directlyconnectedY With the main: water pipe will not leak and inwhich theY parts4 are simple'and few in number.

The .main features of the inventioncomprisefthe mechanism for releasing thevalve after it has been opened, and cushioning the seating ot the -va-lne.

The abone and other obj ectsy and the'nonel features of the .invention Will beset forth1 in the following description, accompanied, by the drawing,.in which,

Figure l is a verticalisectional View of the valve as it appears when opened; and

Fig. 2 is a detail View Vshowing; the position of the valve anditlie direction in-uihich Wateri'loWsA Wheutlle valve is closed;

rPhe casingfor the valve conipnisesa bot tom member 10 andaA top or capmember Ll, which are secureddogether at theiianges 101 and 131:1 respectively. The cap-member 11 has a threaded nipple 12 to which, the water pipe of the building is. connected andi which is provided with an inletfopening 113. The bottom part 10 of the. casing has a, depending' threaded nipplev 1/1 open as at 15: and adapted to be connected: to the flush pipe of the toilet.

firedr on a roclrsha-ftgQS .pivotally supported inf a cavity 24; inthe sident-the dependingpart te of they casing.;y

of Water. has passed The outside end of thelshaft 23fhas anarm 25 connected thereto and: as chain: 26e depends fromy the outer endl` of# the arm 25.

The valve 19 has a stem QZextending upwardly tlierefroimthe inletl; outlet Land valve 19 being; coaxial 'Bhe uppen end= of the valve stemy has a headf ou sleeve` 2S securedv theretoi which is guided in a cylinder 29. lille cylinder QQiiS'supponted: olnthe shoulder byA a memberll andhasaan openingf 32 in onefside thereof.

The bottom1 of tlieiopening 32 is. of.y suiicient height' above the bottom of .the cylin.- der 29'to providee hydraulic oushioinor the valve,tovprevent the v-alzve from strikingits seat,suddenlyy and pounding it, which Would: cause it: to leali aftera short time. fllhehead. 2S operatingiiitlie cylinder 2 9 actsl asa. dash pot for the valve. The lever 33 pivotedf at.

Siliasenezarm Smfliich` engages beneath; theshoulder 36 formed by. thefhead 28andholds the uala'e oil' ite seat wlienatheisaid valve has been raised? by the operating device. lVhile the nal-ve isopen: wateniows,directly from' the inlet ilsthroughthe outlet 16 to the Vflush pipe and means are provided to vrelease'the valafeaft-.errol predetermined quantity, of Wa terhasowed through; the valve@ Means for releasingthe lenen comprises apistou-` 37 whiehhas myoke on. its upper side fitting over the end 39 of the lever 33. The pist-oni 37 moves.substantially parallel to the valvel'f) audworls in)` a cylinder 0in the easing at one-side mi the value.` The cylinder tOiisiformedby one Wall of the cas-V ingf 10fandby a wallisl curvedtocorrespond: tothe wall offthe casing 10. A, spring 42' isv secured to.y the lever 33.1and; extends into engagement with the Wall 41 andstop 411A, andnormally tendsato; hold the, end- Of. .the

le ver e proj ecting; through; the opening i325 and.`

1n engagement Withv the VnluevstemA orf the head 2 8zthereon s0 that .when the value i's- ,litted offitsseat the end will engage un.- der thehead 28. e

i-hef cylinder LlOfisopen atv its uppen end nearest the inletalzandthe maimwatery pressure will therefore be exerted against the upperend of the piston. flhepiston issup-r ported; atrtfhel limit: off its upward trauel andY againstthe stop 44E bythe spinal springf 45 whichmestsinthefbottom o'thecylinder. 40. The l cylinder-,40 is .also .permanently openA at its bottom end and by means of thepassages 46, and t communicates with-the interiori-ot the :casing` 10, smthatiy normallythemain` wa.n

ter pressure will be eserted also against the bottom side of thepiston 3T and the latter will be supported from the bottom side, the pressure of the spring do and water serving to sustain it in its normal position, but the spring Ll5 being insuilicient for that purpose when the water pressure is removed from the bottom side of the piston.V The effective size of the duct formed by the passageways 46 and e7 may be altered by the screw e8, which will also determine the time it takes for the water to flow through the valve before it is closed.

|The passageway 4'? has its outlet located at a point adjacent the seat ll of the valve i9 so that when the valve is lifted ed its seat it will be raised above the outlet. end 50 of the passageway e7 and water will flow out of the cylinder e() at the same time that water flows from the casing l0 through the outlet 16, as indicated by the arrows in Fig. l. The discharge of the water from the cylin der t() removes the water pressure from the bottom side of the piston 37 and as soon as the latter has lowered a sufficient amount due to the water pressure against the upper side thereof, the yoke 3S on said piston will engage the end 39 of the lever 33 and with draw the end 35 from beneath the shoulder 3G, allowing the valve to drop to its seat. The drop will not be sudden but will be cushioned by the dash-pot action of the water in the cylinder 29, as heretofore explained. The main water pressure against the top side of the valve will act on the valve and force it to its seat and consequently there will be no wire drawing and therefore no leakage. rlhe conical valve which tightly fits in the conical valve seat also prevents leakage.

is the valve returns to its seat it passes across and sufficiently below the end 50 of the passageway et? to permit water from the main water upply to enter that passageway, as indicated by the arrow in Fig. Q, and to iiow into the cylinder d0 which will cause the piston 37 to rise in the cylinder and assume its normal position.

By my arrangement the operating or actuating means which is accessible outside of the valve does not enter the high pressure chamber and thus stuiiing bones and similar devices are unnecessary and prevent leakage. rlhe conical valve and valve seat may be ground to a perfect lit so as to keep them from leaking. The release piston 37 is balanced by water pressure on both sides when the valve is closed and when the valve is opened a release of the pressure on one side serves to operate the piston, the vacuum caused by the :tlow of the water through the outlet reducing the pressure below the release valve.

lWhile have shown and described the device in detail, l do not wish to belimited masses to the exact form shown as it is clear that minor changes may be made therein without departing from the spirit of the invention.

Having described the invention what is claimed and desired to be secured by Letters Patent is l. ln a ilushing valve, the combination of a casing having an inlet and an outlet, a valve in said casing controlling said outlet, means for operating said valve, a device for holding said valve open, and means for releasing said `device after a predetermined time so that said valve may close said outlet, said releasing means comprising a piston and a cylinder in which said piston works, said cylinder having a passageway connected therewith which constitutes an inlet and outlet for said cylinder, the outer end of said passageway being located near said valve controlled outlet, the valve operating so that it will be on one side of the end of said pas sageway when the valve is open and on the opposite side when the valve is closed, whereby water may dow from said cylinder across one side of said valve when said valve is open and into said cylinder across the other side of said valve when the valve is closed.

2. In a flushing valve, the combination of a casing having an inlet at the top and an outlet at the bottom thereof, a valve in said casing controlling said outlet, means for operating said valve, a device adapted to engage said valve and hold it open when it has been operated, means for operating said de- .'ice to release said valve after a predetermined amount of water has flowed through said outlet, said releasing means comprising a cylinder open at one end to the water pressure and having a passageway in communication with'its other end which constitutes an inlet and an outlet and opens at a point adjacent the outlet of the casing, a piston in said cylinder and normally sustained in a predetermined position, the water pressure at one side of said piston being removed when said valve is open and the water flowing out of said cylinder through said passageway and out of the casing through said outlet therein, whereby said piston operates said device to release the valve, to permit said valve to close said outlet in the casing, permitting water to iow into said cylinder through said passageway to return said piston to its normal position.

ln a flushing valve, the combination of a casing having an inlet at the top and an outlet at the bottom. a conical valve seat at said outlet, a conical valve controlling said outlet and seating on said lvalve seat, means for operating said valve, a device adapted to hold said valve open when the same has been operated by said means, means for operating said device to release said valve after 'a predetermined amount of water has flowed through said outlet, said releasing means comprising a cylinder open at one end to the main water pressure and having a passageway leading from its other end to a point adjacent the said valve seat, said passageway constituting an inlet and an outlet for said other end of the cylinder, a piston working in said cylinder and normally sustained in a predetermined position and normally having the main water pressure on opposite sides thereof, said valve being adapted to be raised above the outlet end of said passageway, whereby the water pressure at one side of said piston is removed and said piston descends in the cylinder and operates said device to release the valve, said valve when released returning to its seat and moving across the end of said passageway and water entering said passageway and cylinder to restore said piston to its normal position.

4. In a iiushing valve, the combination of a casing having an inlet at one end and an outlet at the other end, a valve in said casing controlling said outlet and having a stem extending into the casing, a head on said stem, and a sleeve fitting said head and cooperating therewith to form a dash pot to cushion said valve, means for operating said valve, a pivoted lever adapted to engage the head on said valve stem and hold said valve open when it has been operated, and means for operating said device to release said valve after a predetermined amount of water has flowed through said outlet, said releasing means comprising a cylinder in said casing and open adjacent the inlet end of said casing, said cylinder having a passageway at its other end leading to a point adjacent said outlet of the casing, said passageway constituting both an inlet and an outlet for said other end of the cylinder, a piston working in said cylinder and having water pressure on its opposite sides, and a spring in the cylinder supporting said piston, the water at the lower side of said piston flowing out through said passageway and out of the casing through said outlet when said valve is open, whereby the piston moves in said cylinder and engages said lever to release the valve after a predetermined movement of the piston, said passageway serving to admit water into said cylinder when said valve is closed, whereby the piston is restored to its normal position.

5. In a flushing valve, the combination of a casing having a chamber provided with an inlet and an outlet below said inlet, a valve seat adjacent said outlet, a valve controlling said outlet and fitting said seat, means for operating said valve, means for holding said valve open a predetermined interval of time comprising a cylinder, a piston working in said cylinder, said cylinder having one end thereof open to water pressure from said inlet and having a duct connected to the other end thereof, said duct leading to a point adjacent said valve seat, whereby when said valve is seated water may fiow over one side of said valve into said cylinder to balance the pressure on opposite sides of said piston, and whereby when said valve is open water may iiow from said chamber and from said cylinder into said outlet under said valve to release the pressure on one side of said piston.

6. In a flushing valve, the combination of a casing having an inlet at one end and an outlet at the other end in line with said inlet, a valve seat adjacent said outlet, a valve in said casing controlling said outlet and fitting said seat, said valve having a stem, the axis of which is located in the center line between said inlet and outlet,y

means for operating said valve, and means for holding said valve open a predetermined interval of time comprising a cylinder having one end thereof open to water pressure from said inlet, a piston working in said cylinder, the other end of said cylinder being adapted to receive water to balance the piston in the cylinder when said valve is closed and being adapted to discharge water to release the pressure on one side of the piston when said valve is open.

7. In a iiushing valve, the combination of a casing having an inlet and an outlet, a valve in said casing controlling said outlet, said valve having a stem extending into the casing, means for operating said valve, hydraulic means for cushioning said valve as it closes the outlet, said hydraulic cushioning means comprising a water chamber in the casing and a head carried by said valve stem and working in said water chamber, a trip engaging the head on said valve stem and holding said valve open when the same is operated, and means for releasing said valve after a predetermined interval of time comprising a fluid operated device for disengaging said trip from said head on the valve stem.

In testimony whereof I affix my signature.

BURCHARD THOENS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

